Dont worry, just take it easy Im sure you will get your visa very soon. I think it is case to case basis, some got their visa very quick and some takes time. If you had not received a notice from the Embassy for your personal interview I will take it positively that the chance of approval is high , you might have your visa without interview.. so dont be mad. who knows today the messenger will knock on your door to deliver your passport with your visa...cheer up girl..